Subject
- River navigation7
- River surveys2
- Shipping2
- Armed forces1
- Civil aircraft1
- Commercial transport1
- Concessions1
- Development policy1
- Economic competition1
- Euphrates Expedition (1835-1837)1
- Euphrates River--Surveys1
- Foreign relations1
- Income tax1
- Mail steamers1
- Postal services1
- Shipping companies1
- Surveys1
- Taxation1
- Taxation legislation1
- Tigris River--Surveys1